http://codeforces.com/contest/978
I came to water the DIV3
the first time AK in codeforces
the problems is watery
but because the velocity of my hand is too slow
and WA easily
so the rank is not so good
http://codeforces.com/contest/978
I came to water the DIV3
the first time AK in codeforces
the problems is watery
but because the velocity of my hand is too slow
and WA easily
so the rank is not so good